首页
登录
职称英语
Influenza should not be dismissed as a trivial disease. It kills thousands of
Influenza should not be dismissed as a trivial disease. It kills thousands of
游客
2025-05-10
33
管理
问题
Influenza should not be dismissed as a trivial disease. It kills thousands of people every year at a very high cost to the economy, hits hardest the young and the elderly, and is most dangerous for people over the age of 65. Influenza is mainly a seasonal illness of the winter months, though in tropical and subtropical areas of Asia and the Pacific it can occur all the year round.
The damaging effects of influenza can be prevented by immunization, but constant changes of antigenic specificity of the virus necessitate a different composition of the vaccine (疫苗) from one year to another. The network of WHO surveillance activities to monitor the evaluation of influenza vi- ms strains, and WHO hold an annual consultation at the end of February to recommend the composition of the vaccine for the forthcoming epidemiological season. These recommendations are published immediately in the weekly epidemiological record.
Vaccination each year against influenza is recommended for certain high-risk populations. In closed or semi-closed settings, maximum-benefit from immunization is likely to be achieved when more than three-quarters of the population are vaccinated so that the benefit of "herd immunity" can be exploited. Special care should be taken of the following groups:
--adults and children with chronic disorders of the pulmonary or cardiovascular systems requiting regular medical follow-up or who had been hospitalized during the previous year, including children with asthma;
--residents of nursing homes and other establishments for patients of any age with chronic medical conditions;
--all people over the age of 65.
Physicians, nurses, and other personal in primary and intensive care units, who are potentially capable of transmitting influenza to high risk persons, should be immunized; visiting nurses and volunteer workers providing home care to high-risk persons should also be included. [br] That a different component part of the vaccine is necessary is principally due to the variable change of ______.
选项
A、virus
B、strain
C、antigen
D、immunization
答案
C
解析
文章第二段指出“constant changes of antigenic specificity of the virus necessitate a different composition of the vaccine(疫苗)from one year to another”,即病毒抗原特异性的不断变化导致了疫苗组成年年不同。故答案为C。
转载请注明原文地址:https://tihaiku.com/zcyy/4069652.html
相关试题推荐
Influenzashouldnotbedismissedasatrivialdisease.Itkillsthousandsof
Influenzashouldnotbedismissedasatrivialdisease.Itkillsthousandsof
Ifhe(wastocome)herethisafternoon,I(shouldask)himtogototheparty(
(While)expertsinbasicscienceareimportant,(skilledtalents)shouldbethe
HisaccountofhisexperienceinAntarcticcannotbedismissedas______.A、unfai
Youshouldkeepalow______beforethistroublepasses.A、imageB、profileC、figu
Youshouldspendabout30minutesonthispart.Presentawrittenargumento
ItisonlywhenyouwatchA(thedensemass)ofthousandsofants,B(crowdedtoge
ThousandsofA(tired,underfed,poorlyclothed)Confederatesoldiers,B(longsin
Thebeliefthatoneshouldworkhardandbehonestisdeeply______inourculture
随机试题
Mysister______likemymother.A、lookB、looksC、lookingB
[img]2012q2/ct_etoefm_etoeflistz_0588_20124[/img][br]Iseachofthesetrueabo
Whatbusinessdoesthecompanydo?Itsells______.[br]Whatshouldthecom
(1)AfewmonthsagoIwasnominatedforGovernorofthegreatstateofNewY
可以说,成本计划时目标成本的一种形式。
C
人体生理功能的调节方式有__________、___________和自身调节三
患者,男性,30岁。口角歪向右侧,左眼不能闭合2天,左侧额纹消失,治疗应选取何经
2020年我国农产品贸易额2468.3亿美元,同比增8.0%。其中,出口额同比减
美国公司将于3个月后交付货款100万英镑,为规避汇率的不利波动,可()做套期保
最新回复
(
0
)